本文提出電流箝制相移控制之隔離雙主動半橋直流–直流轉換器之研 製，雙向主動半橋直流–直流轉換器具有雙向功率、電器隔離、高升壓比與零 電壓開關切換之優點，適合電動車、直流不斷電電源與太陽能光伏發電等儲能 系統。儲能系統採用雙向直流–直流轉換器，需具有電壓控制與電流控制迴 路，係利用相移控制來調整變壓器兩端電壓之相位來控制能量傳輸方向與大 小。峰值電流模式只適用於輸出電壓高於輸入電壓，而無法控制此雙向直流– 直流轉換器之電流控制迴路。本文所提之電流箝制相移控制法，具有適用於輸 出電壓高於、等於與低於輸入電壓之隔離雙主動半橋直流–直流轉換器，此轉 換器之電流箝制相移控制功能具有良好之穩態與動態特性。本文實作一500 W 之隔離雙主動半橋直流–直流轉換器，驗證此電流箝制相移控制法之性能及可 行性。

An isolated bidirectional dual-active-half-bridge (DAHB) DC/DC converter with a current-clamp phase-shift control is proposed in this paper. The DAHB converter combines the functions of a bidirectional power flow transformer, with features including galvanic isolation, high step-up ratio and zero voltage switching, making it highly applicable to energy storage systems in electric vehicles and in the generation of DC uninterruptible power and solar photovoltaic power. In energy storage systems equipped with the bidirectional DC/DC converter that requires a voltage and current control loop, the phase shift controller controls the direction and magnitude of the energy transfer by adjusting voltage phases across the transformer. The peak current mode is applicable only when output voltage is higher than input voltage, and hence, cannot be used as a current control loop in this bidirectional DC/DC converter. Therefore, the proposed current-clamp phase-shift control method may be applied to output voltage that is higher than, equal to and lower than the input voltage of the isolated bidirectional DAHB DC/DC converter. The proposed current-clamp phase-shift control of the converter exhibits good steady-state and dynamic performance during the bidirectional operation for the energy storage systems. Finally, a 500 W experimental prototype is built to show the performance and verify the feasibility of the proposed isolated bidirectional DAHB DC/DC converter using the current-clamp phase-shift control.